Electro Deionization is a process which deionizes water by means of applied current. Effectively removes dissolved inorganic matter. Widely used in Pharmaceutical industries or where, <1 PPM TDS is required. EDI Doesn’t require chemical regeneration so, no need of shutting down the plant during regeneration. Thus, reducing the operation costs. Feed water limiting conditions are strict in case of EDI, so only RO or DM treated water must be used as feed water for EDI.